## 1. Plotting the Direction Field of a
Differential Equation using Maple

(Using the following command and hitting
enter:)

`> `**with(DEtools):**

`> `**dfieldplot(diff(v(t),t)=9.8-v(t)/5, v(t), t=0..10,v(t)=40..60,
title=`Falling Body`);**

When dealing with Maple, or any other software
for that matter, remember that it is a machine you are dealing with and it will
only do what it is programmed to do. So try to put in the commands in the
precise fashion it requires. Using Maple gives you the added advantage of taking
one of its examples and tweaking it to suit your purposes. Here is the example
about the field mice that we talked in the class about. If you already have
with(DEtools): on your screen then you do not have to repeat it. So punch in the
differential equation related to the field mice (page 6 of your book).

`> `**dfieldplot(diff(p(t),t)=0.5*p(t)-450,p(t),t=0..10,p(t)=800..1000);**

`> `